Katy is a distinctive girls' name in United States, ranking #988 in 2004 with 240 recorded births. The name reached its all-time peak in 1997 with 279 births ranking #758. Since 1996, the popularity has decreased by 12.4%. In 2004, approximately 1 in every 7,651 girls born was named Katy. FALLING Recent data shows the name is currently falling.